Find the disconnect switch to your air handler or furnace, and switch it off. This will be located near the unit. Shut off the circuit breaker at your home’s electrical panel if you can’t find the ...

Technology Editor Bill Wong takes some unwanted time to replace his Nest thermostat after the heating system went south. It was one of those weekends. Being rather cold out, the air conditioner (of ...

I have 5 wires in my old programmable thermostat. They were red, white, blue (C), green, and yellow. I put on my new thermostat, a Hunter 44550, and since it is battery powered, I don't need the blue ...